From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri, 4 Oct 2024 12:36:58 +0000 (+0100)
Subject: pinctrl: renesas: rzg2l: Add support for configuring schmitt-trigger
X-Git-Tag: v6.13-rc1~85^2~39^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=725933a54f718af5362ec39971b2933d8bdf6994;p=thirdparty%2Fkernel%2Flinux.git

pinctrl: renesas: rzg2l: Add support for configuring schmitt-trigger

Add support for configuring the multiplexed pins as schmitt-trigger
inputs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/20241004123658.764557-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 8fbb27248160b..5eefbace7d912 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -140,6 +140,7 @@
 #define PUPD(off)		(0x1C00 + (off) * 8)
 #define ISEL(off)		(0x2C00 + (off) * 8)
 #define NOD(off)		(0x3000 + (off) * 8)
+#define SMT(off)		(0x3400 + (off) * 8)
 #define SD_CH(off, ch)		((off) + (ch) * 4)
 #define ETH_POC(off, ch)	((off) + (ch) * 4)
 #define QSPI			(0x3008)
@@ -162,6 +163,7 @@
 #define SR_MASK			0x01
 #define PUPD_MASK		0x03
 #define NOD_MASK		0x01
+#define SMT_MASK		0x01
 
 #define PM_INPUT		0x1
 #define PM_OUTPUT		0x2
@@ -1352,6 +1354,15 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 		break;
 
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		if (!(cfg & PIN_CFG_SMT))
+			return -EINVAL;
+
+		arg = rzg2l_read_pin_config(pctrl, SMT(off), bit, SMT_MASK);
+		if (!arg)
+			return -EINVAL;
+		break;
+
 	case RENESAS_RZV2H_PIN_CONFIG_OUTPUT_IMPEDANCE:
 		if (!(cfg & PIN_CFG_IOLH_RZV2H))
 			return -EINVAL;
@@ -1490,6 +1501,13 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 					     param == PIN_CONFIG_DRIVE_OPEN_DRAIN ? 1 : 0);
 			break;
 
+		case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+			if (!(cfg & PIN_CFG_SMT))
+				return -EINVAL;
+
+			rzg2l_rmw_pin_config(pctrl, SMT(off), bit, SMT_MASK, arg);
+			break;
+
 		case RENESAS_RZV2H_PIN_CONFIG_OUTPUT_IMPEDANCE:
 			if (!(cfg & PIN_CFG_IOLH_RZV2H))
 				return -EINVAL;